On 2017 August 17, the merger of a binary neutron-star system observed through gravitational waves and multi-wavelength emission from gamma rays, X-ray, ultraviolet-optical-near infrared, to radio marked the history of multi-messenger astronomy, showing its tremendous potential to probe the physics of the most energetic events of the Universe. Multi-messenger discoveries are unveiling the rich physics [...]

Pulsars are the most common Galactic GeV gamma-ray sources. Their spectra are hard, but cut off sharply in the energy range of the Large Area Telescope (LAT) on the Fermi satellite. Cherenkov telescopes have detected pulsations from 4 of the brightest of the nearly 300 LAT pulsars. CTAO's improved sensitivity may triple the number of [...]